From: Huaisheng Ye <yehs1@xxxxxxxxxx>
Function persistent_memory_claim doesn't need to get local pointer
dummy_addr from direct_access. Using NULL instead of having to pass
in a useless local pointer that caller then just throw away.
Suggested-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Signed-off-by: Huaisheng Ye <yehs1@xxxxxxxxxx>
Reviewed-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Acked-by: Mike Snitzer <snitzer@xxxxxxxxxx>
---
drivers/md/dm-writecache.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 87107c9..9d79084 100644
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -268,9 +268,8 @@ static int persistent_memory_claim(struct dm_writecache *wc)
i = 0;
do {
long daa;
- void *dummy_addr;
daa = dax_direct_access(wc->ssd_dev->dax_dev, i, p - i,
- &dummy_addr, &pfn);
+ NULL, &pfn);
if (daa <= 0) {
r = daa ? daa : -EINVAL;
goto err3;
--
1.8.3.1
